Bug 106709 – SVGFontElement is leaked

• Status: RESOLVED
• Resolution: DUPLICATE
• Component: SVG

[Ryosuke Niwa]

Looking at the leaks bot output, roughly 26% of leaks seem to come from SVGFontElement:

http://build.webkit.org/LeaksViewer/?url=%2Fresults%2FApple%20MountainLion%20%28Leaks%29%2Fr139478%20%282325%29%2F

[Pratik Solanki]

Here's an example callstack

	Call stack: [thread 0x7fff72b57180]: 
		start 
		main DumpRenderTree.mm:932 
		dumpRenderTree(int, char const**) DumpRenderTree.mm:894 
		runTestingServerLoop() DumpRenderTree.mm:847 
		runTest(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&) DumpRenderTree.mm:1382 
		-[NSRunLoop(NSRunLoop) runMode:beforeDate:] 
		CFRunLoopRunSpecific 
		__CFRunLoopRun 
		__CFRunLoopDoSources0 
		__CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ 
		MultiplexerSource::perform() 
		RunloopBlockContext::perform() 
		CFArrayApplyFunction 
		__block_global_1 
		___withDelegateAsync_block_invoke_0 
		___delegate_didReceiveDataArray_block_invoke_0 
		_NSURLConnectionDidReceiveData_LengthReceived 
		-[NSURLConnectionInternal _withActiveConnectionAndDelegate:] 
		-[NSURLConnectionInternal _withConnectionAndDelegate:onlyActive:] 
		__65-[NSURLConnectionInternal _withConnectionAndDelegate:onlyActive:]_block_invoke_0 
		-[WebCoreResourceHandleAsDelegate connection:didReceiveData:lengthReceived:] ResourceHandleMac.mm:785 
		WebCore::ResourceLoader::didReceiveData(WebCore::ResourceHandle*, char const*, int, int) ResourceLoader.cpp:452 
		WebCore::SubresourceLoader::didReceiveData(char const*, int, long long, bool) SubresourceLoader.cpp:226 
		WebCore::SubresourceLoader::sendDataToResource(char const*, int) SubresourceLoader.cpp:253 
		WebCore::CachedRawResource::data(WTF::PassRefPtr<WebCore::ResourceBuffer>, bool) CachedRawResource.cpp:70 
		WebCore::MainResourceLoader::dataReceived(WebCore::CachedResource*, char const*, int) MainResourceLoader.cpp:515 
		WebCore::DocumentLoader::receivedData(char const*, int) DocumentLoader.cpp:388 
		WebCore::DocumentLoader::commitLoad(char const*, int) DocumentLoader.cpp:319 
		WebFrameLoaderClient::committedLoad(WebCore::DocumentLoader*, char const*, int) WebFrameLoaderClient.mm:846 
		-[WebDataSource(WebInternal) _receivedData:] WebDataSource.mm:215 
		-[WebHTMLRepresentation receivedData:withDataSource:] WebHTMLRepresentation.mm:186 
		-[WebFrame(WebInternal) _commitData:] WebFrame.mm:826 
		WebCore::DocumentLoader::commitData(char const*, unsigned long) DocumentLoader.cpp:357 
		WebCore::DocumentWriter::addData(char const*, unsigned long) DocumentWriter.cpp:222 
		WebCore::DecodedDataDocumentParser::appendBytes(WebCore::DocumentWriter*, char const*, unsigned long) DecodedDataDocumentParser.cpp:50 
		WebCore::HTMLDocumentParser::append(WebCore::SegmentedString const&) HTMLDocumentParser.cpp:370 
		WebCore::HTMLDocumentParser::pumpTokenizerIfPossible(WebCore::HTMLDocumentParser::SynchronousMode) HTMLDocumentParser.cpp:181 
		WebCore::HTMLDocumentParser::pumpTokenizer(WebCore::HTMLDocumentParser::SynchronousMode) HTMLDocumentParser.cpp:277 
		WebCore::HTMLTreeBuilder::constructTreeFromToken(WebCore::HTMLToken&) HTMLTreeBuilder.cpp:379 
		WebCore::HTMLTreeBuilder::constructTreeFromAtomicToken(WebCore::AtomicHTMLToken*) HTMLTreeBuilder.cpp:396 
		WebCore::HTMLTreeBuilder::processTokenInForeignContent(WebCore::AtomicHTMLToken*) HTMLTreeBuilder.cpp:2853 
		WebCore::HTMLConstructionSite::insertForeignElement(WebCore::AtomicHTMLToken*, WTF::AtomicString const&) HTMLConstructionSite.cpp:458 
		WebCore::HTMLConstructionSite::createElement(WebCore::AtomicHTMLToken*, WTF::AtomicString const&) HTMLConstructionSite.cpp:513 
		WebCore::Document::createElement(WebCore::QualifiedName const&, bool) Document.cpp:1109 
		WebCore::SVGElementFactory::createSVGElement(WebCore::QualifiedName const&, WebCore::Document*, bool) SVGElementFactory.cpp:640 
		WebCore::fontConstructor(WebCore::QualifiedName const&, WebCore::Document*, bool) SVGElementFactory.cpp:339 
		WebCore::SVGFontElement::create(WebCore::QualifiedName const&, WebCore::Document*) SVGFontElement.cpp:58 
		WTF::fastMalloc(unsigned long) FastMalloc.cpp:274 
		malloc 
		malloc_zone_malloc

[Stephen Chenney]

Duplicate of https://bugs.webkit.org/show_bug.cgi?id=66438

*** This bug has been marked as a duplicate of bug 66438 ***